[LLVMdev] ASAN tests on ARM (original) (raw)

Evgeniy Stepanov eugenis at google.com
Mon Oct 6 01:57:39 PDT 2014

On Fri, Oct 3, 2014 at 9:18 PM, Renato Golin <renato.golin at linaro.org> wrote:

On 3 October 2014 15:20, Evgeniy Stepanov <eugenis at google.com> wrote:

That's a third option. This flag only really makes sense for one or several test cases in a large GTest file. They can be split and moved to X86. But this adds more complexity to build system which, in my opinion, is never good. Roger.

Compiler-rt and llvm build systems know very little about cross-compiling. Well, right now, it doesn't matter how many targets you build LLVM for, it'll only run the unit tests on the host platform. It doesn't seem to have been designed that way, but it works. Compiler-rt, OTOH, tries to run AArch64 unit tests, which there's no guarantee they'll work on any other platform. There may be something missing in its CMake files that is present in the LLVM's?

I guess the only difference is that compiler-rt tests require execution of target binaries. There is platform test logic in cmake/config-ix.cmake that tries compilation (but not execution) for arm and aarch64 on ARM hosts. Maybe the easiest fix would be to try both on aarch64 host, and only 32-bit arm on 32-bit arm host?

cheers, --renato

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